Databases
StackOverflow2013
Postsdbo
POcreating keys for a dictionary from a list containing the keys
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POcreating keys for a dictionary from a list containing the keys
    primarykey
    data
    text
    <p>I'm trying to build a matrix that holds several values in several levels. I'm trying to generate a dictionary build up like this:</p> <pre><code>{'routername':{'channel':{'01':&lt;value&gt;,'02':&lt;value&gt;}}} </code></pre> <p>The number of keys on the highest level may vary.</p> <p>The script is generating a list of available routers and another list of available channels. I wrote a rather cumbersome function that test for a key and if it is not already there, it adds the key to the dictionary.</p> <p>So, I was wondering if there isn't an easy way to create a dictionary with empty values for the keys in list 'routers'</p> <pre><code>def AddToChart(passed_seq): try: if str(passed_seq[0]) in chart_dict: if str(passed_seq[1]) in chart_dict[passed_seq[0]]: if str(passed_seq[2]) in chart_dict[passed_seq[0]][passed_seq[1]]: if str(passed_seq[3]) in chart_dict[passed_seq[0]][passed_seq[1]][passed_seq[2]]: chart_dict[passed_seq[0]][passed_seq[1]][passed_seq[2]][passed_seq[3]].update(err_sub_dict) else: chart_dict[passed_seq[0]][passed_seq[1]][passed_seq[2]].update({passed_seq[3]:{}}) chart_dict[passed_seq[0]][passed_seq[1]][passed_seq[2]][passed_seq[3]].update(err_sub_dict) else: chart_dict[passed_seq[0]][passed_seq[1]].update({passed_seq[2]:{passed_seq[3]:{}}}) chart_dict[passed_seq[0]][passed_seq[1]][passed_seq[2]][passed_seq[3]].update(err_sub_dict) else: chart_dict[passed_seq[0]].update({passed_seq[1]:{passed_seq[2]:{passed_seq[3]:{}}}}) chart_dict[passed_seq[0]][passed_seq[1]][passed_seq[2]][passed_seq[3]].update(err_sub_dict) else: chart_dict.update({passed_seq[0]:{passed_seq[1]:{passed_seq[2]:{passed_seq[3]:{}}}}}) chart_dict[passed_seq[0]][passed_seq[1]][passed_seq[2]][passed_seq[3]].update(err_sub_dict) except ValueError: print "AddToChart: ",err_sub_dict,sys.exc_info()[1][0] except: print sys.exc_info() print "AddToChart: variable not defined: " + str(passed_seq) </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USMartijn Pieters
    1. USoneindelijk
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POcreating keys for a dictionary from a list containing the keys
      1. This table or related slice is empty.
      1. VTUpMod
    1. COWhat language is this? Please tag the language!
      singulars
      1. POcreating keys for a dictionary from a list containing the keys
      1. USBernd Elkemann
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload